Recently, we presented a method for analyzing experimental data for the pressure dependence of the melting temperature of metals. In this paper, we address the question of the applicability of this method to other types of solids, and demonstrate that it is indeed also applicable to rare-gas solids. We find that, as for metals, in the absence of phase transitions, plots of the logarithm of the reduced melting temperature T' (==${\mathit{T}}_{\mathit{m}}$/${\mathit{T}}_{\mathit{m}0}$${\mathit{X}}^{2}$) versus the logarithm of the reduced pressure P' (==1+\ensuremath{\beta}P) are straight lines with slope \ensuremath{\Gamma}==2${\ensuremath{\gamma}}_{0}$/\ensuremath{\alpha}, where ${\mathit{T}}_{\mathit{m}0}$ is the zero-pressure melting temperature, X==(V/${\mathit{V}}_{0}$${)}^{1/3}$, ${\ensuremath{\gamma}}_{0}$ is the Gr\"uneisen parameter at ${\mathit{T}}_{\mathit{m}0}$, V is the volume, ${\mathit{V}}_{0}$ is the volume at zero pressure, \ensuremath{\beta}==\ensuremath{\alpha}/${\mathit{B}}_{0}$, ${\mathit{B}}_{0}$ is the isothermal bulk modulus at ${\mathit{T}}_{\mathit{m}0}$, and \ensuremath{\alpha} is a fitting parameter. In addition, we demonstrate that, to a very good approximation, all of the reduced melting temperature for Ar, Kr, and Xe fall on a single straight line.